Abstract: Provided in the present invention are a method performed by user equipment and user equipment. The method comprises the following steps: remote UE initiating an RRC connection resume process, and determining whether there is a PC5 RLC entity for SRB1; and if there is no PC5 RLC entity for SRB1, the remote UE establishing a PC5 RLC entity for SRB1; or, if there is a PC5 RLC entity for SRB1, the remote UE re-establishing the PC5 RLC entity, and further determining whether the re-established PC5 RLC entity corresponds to a current serving relay UE, or corresponds to a destination address targeting the current serving relay, wherein, if no correspondence is found, the remote UE associates the re-established PC5 RLC entity with the current serving relay UE, or associates same with the destination address targeting the current serving relay.

Abstract: The present disclosure provides a control method for a user equipment, a control method for a base station, and a user equipment. The control method for a user equipment comprises receiving scheduling request configuration information related to a sidelink; and performing a scheduling related to the sidelink based on the received scheduling request configuration information, wherein the scheduling request configuration information is received from at least a network side or a base station side and comprises a scheduling request configuration identity (ID) or specific scheduling request configuration.

Abstract: Provided in the present invention are a method performed by user equipment, and user equipment, which can reliably perform processing related to a beam failure recovery request/beam failure report (BFR) and/or scheduling request (SR). The method comprises: detecting a measurement result of a measurement reference signal corresponding to a serving cell; if the measurement result indicates that a beam failure has occurred, utilizing a counter to count the number of beam failures; and when the count value of the counter is above a given threshold, performing processing related to a beam failure recovery request/beam failure report (BFR) and/or scheduling request (SR).

Abstract: Provided in the present invention are a method performed by user equipment and user equipment. The method performed by user equipment includes the following steps: receiving, by the user equipment (UE), a message or command transmitted from a base station, wherein the message is a radio resource control (RRC) reconfiguration message, and the message at least comprises information related to switching the UE to target relay UE, or information instructing the UE to establish an indirect connection to the base station by means of the target relay UE, or an identifier of the target relay UE, or PC5 configuration information; and performing, by the UE upon receiving the message or command, switching from a direct connection to the base station to the indirect connection to the base station by means of the relay UE on the basis of the message or command.

Abstract: The present invention provides a random access method and user equipment. The random access method includes: user equipment (UE) transmitting a message A to a base station, wherein the message A includes a preamble and a payload of the message A; the user equipment (UE) receiving a message B transmitted by the base station and serving as a response message to the message A; determining whether the message B includes a contention resolution ID of the UE; and upon determining that the message B includes the contention resolution ID of the UE, generating a media access control layer control information (MAC CE), or a media access control layer protocol data unit (MAC PDU), or hybrid automatic repeat request acknowledgement (HARQ-ACK) information to indicate acknowledgement information related to the message B.

Abstract: The present invention provides a method performed by user equipment and user equipment. The method comprises: receiving control information from a base station, the control information comprising a resource configuration related to a transmission on a Physical Sidelink Shared Channel (PSSCH); transmitting data to other UE through the PSSCH according to the control information; and transmitting to the base station first feedback information related to the transmission on the PSSCH and/or second feedback information related to a transmission on a Physical Downlink Shared Channel (PDSCH) between the base station and the UE. In this way, reliable data transmission can be achieved, thereby improving the reliability and stability of an entire communication system.

Abstract: Provided in the present invention are a method performed by user equipment, and user equipment. The method includes the following steps: receiving, by relay UE, an indication from an upper layer, information in the indication including information that an established PC5 RRC connection is used for a relay or a relay service, or information in the indication indicating that a PC5 RRC connection has been established for a dedicated destination address and that the connection is used for a relay or a relay service; and performing, by the relay UE on the basis of the indication or upon receiving the indication, the following an operation of establishing a PC5 RLC bearer, establishing a PC5 RLC entity, or establishing a corresponding logical channel, wherein the established PC5 RLC bearer, PC5 RLC entity, or logical channel is used to bear an SRB0 message, or to bear a message transmitted using a logical channel of a dedicated logical channel category.

Abstract: The present invention provides a processing method for remote user equipment and user equipment. The processing method for remote UE comprises the following steps: receiving, by the remote UE, a PC5-S message from relay UE, wherein the PC5-S message is a message or signaling transmitted on a PC5 non-access stratum; and performing, by the remote UE upon receiving the PC5-S message, the following operation on the basis of an RRC state of the remote UE: when the remote UE is in an idle/inactive state and a timer T300/T319 is running, the remote UE stops the timer T300/T319; when the remote UE is in a connected state, the remote UE starts/initiates an RRC connection re-establishment procedure.

Abstract: The present invention provides a processing method for relay user equipment (UE) and user equipment.

Abstract: Provided in the present invention are a method performed by user equipment, and user equipment. The method performed by user equipment includes: in the case that the user equipment is in an inactive state and needs to perform small data transmission, triggering a radio resource control (RRC) connection resumption procedure; and in the RRC connection resumption procedure, using, by the user equipment, a predefined default configuration for a data radio bearer (DRB), and restoring configurations in RRC configurations for the DRB other than the default configuration. Therefore, in the case that user equipment is in an inactive state and needs to perform small data transmission, additional signaling overhead can be avoided, and power consumption can be reduced, thereby improving communication efficiency and reliability of a wireless communication system.

Abstract: Provided in the present invention are a control method for user equipment, and user equipment. The control method for user equipment (UE) comprises: receiving, by the UE, a channel state information (CSI) request transmitted by other UE; generating, by the UE, on the basis of the CSI request, a CSI report transmitted through a PSSCH, and sidelink control information (SCI) for scheduling and indicating the transmission of the PSSCH; and setting, on the basis of whether the PSSCH carries a MAC protocol data unit (MAC PDU), a quality of service (QoS) parameter related to the QoS of the PSSCH transmission included in the SCI.

Abstract: Provided are a method for radio link failure recovery and user equipment. The method for radio link failure recovery includes: determining whether a radio link failure (RLF) occurs on a radio link of user equipment (UE); when the RLF occurs on the UE, if the UE is configured with a conditional handover, then executing a cell selection procedure; and performing a radio link failure recovery operation according to a cell selection result of the cell selection procedure.

Abstract: The present invention provides an access control method in user equipment and user equipment that can efficiently and reliably establish a radio bearer for data transmission. The access control method comprises: determining a layer-2 destination ID according to information acquired from an upper layer; and establishing a radio bearer (RB) associated with the determined layer-2 destination ID.

Abstract: A handover control method of a source base station (BS). The method includes: transmitting a conditional handover request to a target BS; when a handover request confirmation message is received from the target BS, transmitting a conditional handover message to a user equipment (UE); and receiving a conditional handover complete message from the target BS in response to a Radio Source Control (RRC) connection reconfiguration complete message being sent from the UE to the target BS.

Abstract: Provided in the present invention are a method performed by user equipment, and user equipment. A method performed by user equipment, in which user equipment (UE) configured with dual connectivity or multi-connectivity performs configuration management on a secondary cell group (SCG) in a deactivated state during communication with a master cell group (MCG) and the SCG, includes the following steps: receiving, by the UE, an RRC connection reconfiguration message transmitted by a base station to the UE, the RRC connection reconfiguration message including a dedicated cell configuration for an SCG and a synchronization indication, wherein the SCG corresponding to the dedicated cell configuration is a target SCG, a primary serving cell (PSCell) thereof is a target PSCell, and an SCG/PSCell serving the UE before the reconfiguration message is received is a source SCG/source PSCell; and performing, by the UE, different PSCell change operations according to different states of the target SCG or the target PSCell.

Abstract: Provided in the present invention are a method performed by user equipment, and user equipment. A method performed by user equipment is a method of an RRC connection re-establishment procedure performed by user equipment (UE), and includes the following steps: triggering or initiating, by the UE, an RRC connection re-establishment procedure; during initiation of the RRC connection re-establishment procedure, starting, by the UE, a timer T311, and performing cell selection or relay selection; and in the case that the UE has selected a suitable cell or the UE has selected a suitable relay, stopping, by the UE, T311, wherein the suitable cell is a cell of which a measured value or a level value meets a cell selection rule, and the suitable relay is a relay of which a measured value or a level value meets a relay selection rule.

Abstract: Provided in the present invention are a processing method for a relay UE and user equipment. In the processing method for a relay UE, the relay UE serves a remote UE, and the processing method includes: the relay UE receiving a paging message transmitted from a base station, and confirming a UE identity in the received paging message; the relay UE obtaining a UE identity of the remote UE from an upper layer or an RRC layer of the relay UE; the relay UE determining whether the received paging message includes the UE identity of the remote UE; and if the paging message includes the UE identity of the remote UE, the relay UE generating a paging indication that includes the UE identity of the remote UE or indicates that the UE identity of the remote UE has been received.

Abstract: Provided in the present disclosure are a bandwidth configuration method and user equipment. The bandwidth configuration method is performed by user equipment (UE), and the UE is configured to support or allow inactive state data transmission. The method includes the following steps: after the UE enters an inactive state, if a required condition for inactive state data transmission thereof is fulfilled, the UE activating an uplink bandwidth part (UL BWP) for inactive state data transmission (IDT); and after transmitting uplink data, the UE receiving response information transmitted by a base station side.

Abstract: Provided in the present invention is a method performed by user equipment, and user equipment.

Abstract: Provided by the present disclosure are an access control method in a user equipment and the user equipment, which may flexibly control the activation and deactivation of PDCP duplication and the activation and deactivation of a serving cell restriction. The access control method comprises: receiving configuration information related to a data radio bearer (DRB); receiving a media access control element (MAC CE) indicating the activation/deactivation of a packet data convergence protocol layer (PDCP) duplication function of the DRB; when the MAC CE indicates the deactivation of the PDCP duplication function, determining whether the configuration information comprises indication information, the indication information indicating a restriction relationship between a logical channel associated with the DRB and a serving cell which is allowed to be used; and determining a serving cell used for the logical channel according to the result of the determination.